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Finding the Fourth Proportional to 3,558.78, 5,336.15 and 1,609.11

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Solution

The fourth proportional to 3,558.78, 5,336.15 and 1,609.11 is: 2,412.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,558.78 : 5,336.15 = 1,609.11 : x
  2. Step 2: Convert to fraction form
    3,558.78/5,336.15 = 1,609.11/x
  3. Step 3: Cross multiply
    3,558.78x = 5,336.15 × 1,609.11
  4. Step 4: Simplify right side
    3,558.78x = 8,586,444.28
  5. Step 5: Solve for x
    x = 8,586,444.28/3,558.78
  6. Step 6: Final answer
    x = 2,412.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.